Key parameters at a glance

A radius of 2.63 Earth radii
A mass of 7.41 Earth masses
Surface gravity around 1.07 g
An orbital period of 1.508 days
Semi-major axis 0.0270 AU
Equilibrium temperature 855 K (582 °C)
Distance from Earth 255.88 light-years
Earth Similarity Index 0.290
Travel time at Voyager 1 speed 4,512,400 years
Almost certainly tidally locked to its host star given the close orbit

TOI-2768 b Planet Profile

Physical Specs

Radius

2.63 R⊕

Radius (Jupiter)

0.235 R♃

Mass

7.41 M⊕

Mass (Jupiter)

0.023 M♃

Density

2.24 g/cm³

Surface Gravity

1.07 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.290

HZ Position Inner

Controversial No

Discovery

Year 2024

Method Transit

Facility Transiting Exoplanet Survey Satellite (TESS)

Telescope 0.1 m TESS Telescope

Size rank in cohort

Rank by radius

#969of 1978

top 48.9%

This planet

2.63R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1241 b 2.63 R⊕ GJ 3473 c 2.63 R⊕ Kepler-319 c 2.63 R⊕

Metric	Earth	TOI-2768 b	Jupiter
Radius (R⊕)	1.00	2.63	11.21
Mass (M⊕)	1.00	7.41	317.83
Density (g/cm³)	5.51	2.24	1.33
Surface Gravity (g)	1.00	1.07	2.53
Insolation (S⊕)	1.00	89.05	0.037

Star Catalogue Identifiers

TIC

TIC 443556801

Gaia DR2

Gaia DR2 2950113598541387776

Gaia DR3

Gaia DR3 2950113598541387776

System

TOI-2768

Percentile among Sub-Neptune cohort

Radius 2.630 R⊕ · percentile 50 / cohort 1978

Mass 7.410 M⊕ · percentile 46 / cohort 1978

Orbital period 1.51 d · percentile 1 / cohort 1946

Distance 78.45 pc · percentile 17 / cohort 1975

ESI 0.290 · percentile 26 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

1.508 days

Semi-major axis

0.0270 AU

Eccentricity

—

Inclination

87.78 °

Year Length

A year here lasts approximately 1.51 Earth days (0.4% of a terrestrial year) at a mean orbital distance of 0.0270 AU.

Transit Fingerprint

Depth

0.179 %

Duration

1.032 h

Impact parameter b

0.340

Rp / R★

0.043400

Transit midpoint (BJD)

2,459,225.6442

Photometric dip

Transit produces a flux drop of 1,790 ppm lasting ≈ 1.03 h.

Extended Orbital Architecture

Planet / star radius ratio

0.043400

Semi-major axis / stellar radius

8.830

Impact parameter (b)

0.340

Transit mid-time (BJD)

2,459,225.6442

Angular separation (arcsec)

0.34400

Eq. Temperature

855K

(582 °C)

Insolation (S⊕)

89.05

Earth = 1.00

Earth Similarity (ESI)

0.290

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.

Discovery Paper

Primary reference

Pel & Aacute Ez Torres et al. 2024

Instrument

TESS CCD Array

Publication

2024-10

Observation locale

Space

Discovery cohort

Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).

Gliese 12 b · Rocky Terrestrial TOI-6002 b · Super-Earth TOI-5713 b · Super-Earth TOI-4336 A b · Sub-Neptune TOI-406.01 · Sub-Neptune TOI-1224 c · Sub-Neptune LHS 1678 d · Rocky Terrestrial TOI-2088 b · Sub-Neptune TOI-2120 b · Sub-Neptune TOI-1806.01 · Sub-Neptune TOI-4633 c · Sub-Neptune TOI-260 b · Super-Earth

Host System: TOI-2768

Spectral Class

M-type red dwarf

Effective Temperature

4,008 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.657 R☉

Stellar Mass

0.630 M☉

Metallicity [Fe/H]

—

Distance

78.45 parsec

Light-years 255.88 ly

V-band magnitude

12.66 mag

Voyager-speed travel 4,512,400 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

12.718 mas

Total Proper Motion

118.703 mas/yr

PM Right Ascension

-82.72 mas/yr

PM Declination

85.14 mas/yr

Galactic Cartesian (pc)

x = -0.157 · y = 0.951 · z = -0.267

Equatorial (J2000)

RA 99.36413° · Dec -15.48120°

Galactic ℓ, b

225.291° · -10.021°

Ecliptic λ, β

101.562° · -38.545°

HTM-20 index

-465174525